RF Interconnection Technique of MMIC Microwave Switch Matrix for 60dB On-to-off Isolation

60dB 온-오프 격리도를 위한 통신 위성 중계기용 MMIC MSM의 RF 결합 방법

  • Noh, Y.S. (Global Area Wireless Technology Research Group, ETRI) ;
  • Ju, I.K. (Global Area Wireless Technology Research Group, ETRI) ;
  • Yom, I.B. (Global Area Wireless Technology Research Group, ETRI)
  • 노윤섭 (한국전자통신연구원 광역무선기술연구그룹) ;
  • 주인권 (한국전자통신연구원 광역무선기술연구그룹) ;
  • 염인복 (한국전자통신연구원 광역무선기술연구그룹)
  • Published : 2005.11.05

Abstract

The isolation performance of the S-band single-pole single-throw (SPST) monolithic microwave integrated circuit (MMIC) switch with two different RF-interconnection approaches, microstrip and grounded coplanar waveguide (GCPW) lines, are investigated. On-to-off isolation is improved by 5.8 dB with the GCPW design compared with the microstrip design and additional improvement of 6.9dB is obtained with the coplanar wire-bond interconnection (CWBI) at 3.4 GHz. The measured insertion loss and third-order inter-modulation distortion (IMD3) are less than 2.43 dB over 2.5 CHz $\sim$ 4 GHz and greater than 64 dBc.

Keywords

Isolation;pHEMT;MMIC;MSM;SPST;switch